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F. A. JONES. Automatic-Damper Regulator.

Patented Jan. 13,1880.`

NPETERS PMOTO'UTMOWPNER, WASHINGTONA D. C.

dUNITED STATES ATENT OFFICE.

FLORENTINE A. JONES, OF NEW YORK, N. Y.

AUTOMATIC DAM PER-REGULATOR.

SPECIFICATION formingpart of Letters Patent No. 223,446, dated JanuaryI 13, 1880.

Application filed April 29, 1879.

To all 'whom it may concern:

Be it known that I, FLORENTINE A. JONES, of New York, in the county of New York and State of New York, have invented a new and useful Improvement in Automatic Damper- Begulators, of which the following is a specificatiou The object of this invention is to provide a simple and efcient means for operating the damper of a steam-boiler furnace, so that th'e degree of heat in the furnace may be automat' ically regulated for the requirements of the boiler.

The invention consists in the employment of one or more diaphragms, in connection with a spring or springs arranged in suitable steamcham'bers, and actuated by steam-pressure in such a manner as to cause to be `raised or lowered a connecting-rod, to which is attached a lever connected directly or indirectly with the arm of the damper in the furnace-fine.

Referring to the accompanying drawings, Figure l represents a perspective View of an instrument or apparatus embodying my invention, and Fig. 2 is a vertical longitudinal section of the same.

A and B represent two steam-chambers connectin g with each other by means of the tubes F F, as shown, and the tubes F F are connected in any suitable manner with the boiler by means of tubes attached to the openings G G. Instead of connecting at G G, these openings may be closed, and the steam be made to enter openings at m m in the upper and lower steamchambers, B A, by tubes properly connected with the boiler. In the chambers A and B are arranged, respectively, diaphragms O O', secured in the same by means of the caps H H, as shown. Within the chamber A is arranged a volute spring, D, above the diaphragm G, and pressing the same downward. To the center of spring Dis secured a connecting-rod, E, which is also attached, at its upper end, to the diaphragm C in chamber B. To the rod E is pivoted a lever, I, connected at one end to the lower steam-chamber casing by means of Ahinged link K, as shown. The free end of the lever I is to be connected,by means of one or more levers, to the i'lue damperrod in any suitable manner. A weight, L, may be placed on the lever I for the purpose of accurately adjusting the closing ot' the damper.

For ordi-nary use one spring, in connection with the dialihragms, may be sufficient for the operation of the device. In case of very high pressure an additional spring may be similarly applied to the upper diaphragm, O', in chamber B.

chamber A through an opening made at m atV the bottom of said chamber.

It will be seen that the diameter of the dia` phragm O is smaller than' that of O in chamber A, so as to expose a smaller area to the action of the steam, for the reason that if the surfaces exposed to the action of the steam were of the same area in both'diaphragms the force exerted upon `one diaphragm would be equal to that'upon the other, and consequently produce no eect upon the connecting-rod.

In operation, the steam is caused to enter the tubes F F by means of tubes connecting the openings G G with the boiler in any suitable manner. The steam thenpasses into the chambers A and B, exerting its force ou the diaphragm O upward and on diaphragm O downward. As diaphragm O presents thelargest a rea, the pressure o'f steam on the same will be the greatest, thus carrying up the conilecting-rod E and pressing up diaphragm O. Inasm uch as diaphragm C cannot rise without compressing spring D, it follows that it will reach a point where the pressure downward of diaphragm C', aided by the resistance of spring D, will exactly equal the pressure upward of diaphragm O. When the pressure of steam is reduced in the boiler it will be correspondingly reduced on the .dia-phragms; but the force of spring D will remain the same, and will have the tendency to draw the rod E downward until it ceases to act, so as again, with the diaphragm O', to equal thepressure on diaphragm C, thus actuating the connections to the damper and causing the latter to open or close as the pressure of the steam diminishes or increases.

IOO

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In an automatic draft-regulator, the combination of the diaphragm C with the diaphragm C and spring D, and the rod E, all constructed and arranged as shown and de scribed.

2. In an automatic draftregulator, the combination of the diaphragm C with the diaphragm (l and spring D, and the rod E aud lever I, all constructed and arranged substantially as shown and described.

3. In au vautomatic damper-regulator, the combination of two diaphragms, arranged each within a separate steam-chamber, substantially as and for the purpose described.

4C. The combination, in au automatic damper-regulator, of two diaphragms, arranged each in a separatesteam chamber, and counected together by a rod, E, or its equivalent, and one or more springs, substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

F. A. JONES.

Witnesses J. H. ADAMS, J. CUNNINGHAM. 

